Jolida's JD 302 BRC integrated vacuum-tube stereo amplifier is an example of state-of-the-art Ultra Linear, Class AB vacuum tube technology as it exists today. It is housed in a heli-arc welded chassis and is rated at 50 watts per channel RMS. For more info, see the specs below. This piece was purchased on 4/20/2011 and has approximately 400 hours of operation so the tubes and other components have been adequately burned in for optimum amplification. It has the Jolida $200.00 upgrade which includes replacing the 16 original resistors with high accuracy ones, replacing the two (2) 0.47mf Jolida Black custom caps with two (2) 0.47 mf Silver Clarity caps, replacing all diodes with high speed Hexfed diodes, proprietary rewiring in the area of the power tubes and replacing the four (4) original 12AX7 tubes with high quality Tung-Sol gold pin 12AX7's. The reason for selling is that, even though I feel the sound of vinyl is the best audio available, I tired of cleaning LP's and changing records during playback. So two (2) years ago I converted to the convenience of listening to digital by ripping all my cd's and vinyl to FLAC files on a hard drive which I listen to using JRiver Media Center on my computer, a headphone amp, a Meridian DAC and a high end pair of Byerdynamic headphones. You may contact me at Email "firstname.lastname@example.org" or by phone 860-693-8931.
Maximum Power : 75 W per channel at 8 ohms, 1KHz
Rated Output Power: 50 W per channel at 8 ohms, 25Hz to 50KHz
Frequency Response: (At 1 watt into 8 ohms) 8Hz to 130KHz + 1dB
Bandwidth: 15H z to 80KHz + 3dB; 0dB 50 W 1KHz
Distortion THD: Less than 1% at 50 W output, 28Hz to 15KHz
Circuit Type: Ultra Linear, Class AB
Input Impedance: 100Kohms
Input Sensitivity: 500mV at 1KHz for 50 watt output
Output Impedance: 4 ohms and 8 ohms
Negative Feedback: Less than 5 dB
Noise and Hum: 85dB below rated output
Tube Complement: 2 matched pairs (4) of Electro-Harmonix EL34/6CA7
power output and 4 pcs. Tung-Sol Gold Pin
12AX7/ECC803S pre-amplifier drivers. (Tung-Sols part
of $200.00 Upgrade Mod)
Power Requirements: 110V-120 VAC 50Hz 180 watts-standby, 450 watts
maximum (220 VAC 50Hz option)
Dimensions: 17 inches (43cm) wide by 15 inches (38cm) deep by 7.5
inches (19 cm) high
Weight: 39 pounds (18 Kg) net, approximately 46 pounds (21 Kg) packaged
Bias Settings: 400 millivolts + 50 mV
Fuse: 110 - 120 VAC, 6.3 Amp Fast Blo; 200 - 240 VAC, 3
Amp Fast Blo, Size 5mm X 20mm
Basic Construction and Features:
o Fully Integrated Stereo Amplifier: Input 400mV driving 50 watts, maximum 75
o EZ Biasing - Biasing made simple: Turn the top panel screws in front of the
EL34's until the light goes on and the tube is biased.
o Multiple Inputs: Front mounted selector switch: CD, DVD, Tuner and Aux.
o Bypass function switch: Allows your amplifier to operate as a power amp.
o Custom Wound Audio Transformers with a core of German grain oriented silicon
steel. 15th generation proprietary design. Secondary can be configured for a 4 ohm
or 8 ohm load.
o Remote Control: Standby, volume and mute
o State of the Art Components: ALPS audio potentiometer, gold plated RCA input
o Low Feedback Design:
Only 5 dB